function Cookie(key,value)
{
	this.key=key;
	if(value!=null)
	{
		this.value=escape(value);
	}
	this.expiresTime=null;
	this.domain=null;
	this.path="/";
	this.secure=null;
}
Cookie.prototype.setValue=function(value){this.value=escape(value);}
Cookie.prototype.getValue=function(){return (this.value);}
Cookie.prototype.setExpiresTime=function(time){this.expiresTime=time;}
Cookie.prototype.getExpiresTime=function(){return this.expiresTime;}
Cookie.prototype.setDomain=function(domain){this.domain=domain;}
Cookie.prototype.getDomain=function(){return this.domain;}
Cookie.prototype.setPath=function(path){this.path=path;}
Cookie.prototype.getPath=function(){return this.path;}
Cookie.prototype.Write=function(v)
{
	if(v!=null)
	{
		this.setValue(v);
	}
	var ck=this.key+"="+this.value;
	if(this.expiresTime!=null)
	{
		try
		{
			ck+=";expires="+this.expiresTime.toUTCString();;
		}
		catch(err)
		{
			alert("expiresTime参数错误");
		}
	}
	if(this.domain!=null)
	{
		ck+=";domain="+this.domain;
	}
	if(this.path!=null)
	{
		ck+=";path="+this.path;
	}
	if(this.secure!=null)
	{
		ck+=";secure";
	}
	document.cookie=ck;
}
Cookie.prototype.Read=function()
{
	try
	{
		var cks=document.cookie.split("; ");
		var i=0;
		for(i=0;i <cks.length;i++)
		{
			var ck=cks[i];
			var fields=ck.split("=");
			if(fields[0]==this.key)
			{
				this.value=fields[1];
				return (this.value);
			}
		}
		return null;
	}
	catch(err)
	{
		alert("cookie读取错误");
		return null;
	}
}